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Covered Versus Uncovered Wallstent for Malignant Extrahepatic Biliary Obstruction: A Cohort Comparative Analysis Do Hyun Park, Myung–Hwan Kim, Jung Sik Choi, Sang Soo Lee, Dong Wan Seo, Ji Hye Kim, Jimin Han, Jong Cheol Kim, Eun Kwang Choi, Sung Koo Lee Clinical Gastroenterology and Hepatology Volume 4, Issue 6, Pages (June 2006) DOI: /j.cgh Copyright © 2006 American Gastroenterological Association Terms and Conditions
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Figure 1 Kaplan-Meier survival curve. No significant difference was observed in patient survival between the covered and uncovered Wallstent groups. Clinical Gastroenterology and Hepatology 2006 4, DOI: ( /j.cgh ) Copyright © 2006 American Gastroenterological Association Terms and Conditions
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Figure 2 Kaplan-Meier curve showing cumulative stent patency. No significant difference was noted in cumulative stent patency between the covered and uncovered Wallstent groups. P = .842. Clinical Gastroenterology and Hepatology 2006 4, DOI: ( /j.cgh ) Copyright © 2006 American Gastroenterological Association Terms and Conditions
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Figure 3 Gross appearance of endoscopically removed covered Wallstent. The stent is filled with sludge. Clinical Gastroenterology and Hepatology 2006 4, DOI: ( /j.cgh ) Copyright © 2006 American Gastroenterological Association Terms and Conditions
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Figure 4 Various cholangioscopic findings of metal stents inserted in the common bile duct. (A) A well-functioning uncovered metal stent that was inserted into common bile duct because of malignant stricture. (B) Uncovered Wallstent is occluded by tumor ingrowth. Stent is actually embedded in the tumor. (C) Uncovered Wallstent clogging with sludge materials is shown. Clinical Gastroenterology and Hepatology 2006 4, DOI: ( /j.cgh ) Copyright © 2006 American Gastroenterological Association Terms and Conditions
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